See Definition for skotov 4655
See Definition for gnofov 1105
See Definition for zofov 2217
See Definition for acluv 887
skotov is a general word, meaning darkness in any sense.
gnofov usually refers to darkness that accompanies a storm.
zofov meant originally the gloom of twilight. It was then
applied in classical Greek to the darkness of the underworld, the gloom
of a sunless region. The latter meaning seems to be practically the one
which the word has in the N.T.
acluv is specifically a misty darkness.